Hand gain-cutting tool.



0. F.'O. ROYAL & E. E. THOMAS.-

HAND GAIN cumme TOOL. APPLICATION FILED AUG. T. 1917.

Patented Apr. 9, 1918.

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CHARLES 0. ROIZAL AND EDWIN E. THOMAS, 0F POR'lLAND,-OREGO1\T,ASSIGNOBS, BY

DIRECT AND MESNE ASSIGNMENTS, 0F ONE-HAZE T0 SAID ROYAL AND ONE-HALF 1'0L. A. JACOBSEN, 0F PORTLAND, OREGON.

HAND GAIN-CUTTING rootneeaeoit Application filed August 7, 1917. SerialNo. 184,919.

ting tools, and more particularly to a portable tool, especially adaptedfor cutting gains or notches in spaced timbers, into which are to beembedded connecting strips, or braces, for holding. said spaced timbersor ribs in fixed positions and for adding strength generally to'thestructure in which said strips, or braces, are embedded. Our inventionis especially well adapted for use in cutting gains, or notches, in theedges of the ribs of wooden vessels in order that strengthening stripsor brace members may be 'set therein flush with the outer surface ofsaid ribs, or timbers.

Among the salient objects of our inven tion is to provide a practical,portable hand tool of the character referred to. which can be used invarious positions with the greatest convemence and with perfect safetyto the workman using the same.

In order to more clearly-explain our in-.

vention, we have illustrated one practical embodiment thereof ontheaccompanying sheet of drawings, which we Will now describe.

Figure 1 is a top plan view'thereof, with a portion of a motor shown inlight dot and.

, dash lines; and

Formed as a part of said':yoke 2, is a supporting bracket 4:, in thebearing box 5 of which, is mounted a sleeve 6, keyed to the drivingshaft 7, as -at 8, which extendsthrough. the combination hand grip andbearing sleeve 1. 'A beveledgear 9, issecured to said sleeve 6, andmeshes with and drives a beveled gear 10, keyed on a shaft Specificationof Letters Patent.

- well-known ways.

Patented Apr, 9, 1918.

11, having bearingsat its opposite ends, as

at 12-12, in the ends of the yoke 2.

Mounted on said shaft 11, at a space apart, are two circular saws 13-13,shown in dotted lines in Fig. 1, and one of which is geen in full linesin Fig. 2. Said saws may be mounted on the shaft in any of the Securedto the inner sides of the yoke 2, are saw guards 1a14 each' being heldin .place over the saw by means of holding" bolts 15 and 16. By removingthe bolt 16, the saw guard can be turned backwardly on the bolt 15, outor the way without the necessity of wholly detach-- ing it from the yoke2; Mounted on the under side of said yoke 2, is a guide yoke,

or gage, 17, pivotally secured, as at 18,. to the opposite outer sidesof said yoke 2, as clearly shown in Fig. 2, said yoke being providedwith a slotted arm 19, on.each side thereof, whereby it can beadjustably secared to' the outer ends .of the yoke 2, as by means ofthumb nuts 20-20. Said guide yoke 17, is slantingyor beveled, as-at 17',

at its outer end, whereby it can be pushedv easily over the edges of the-spaced ribs, or

timbers, on which the tool is being used, said guide yoke sliding acrossthe edges thereof, from'one. to the other, sled-runner fashion, as thetool is pushed'along by hand. Thus it will be understood that the g5-saws 13-13 will cut notches, or gains, in

at which guide yoke 17, is set relativeto the saws.

While wehave indicated dash lines a pneumatic power mechanism P, it isto be understood that any motive power may be used for driving the powershaft 7 of our tool.

By providing a carryingv yoke 2, which is adjustable around the'end ofthe sleeve 1, said yoke and saws can beadjusted for use in. differentpositions without the necessity of turning the power mechanism, thusallow-- ing the weight thereof to always hang down directly beneath theaxis thereof. Itwill be evident that as the carrying yoke 2 is turnedabout the end of the sleeve 1, the beveled gear 10, carried by the shaft11, will simply roll around on the beveled gear 9, thus making itpossible to turn the yoke 2,

on the sleeve 1, to anyposition" whatever,

90 in light dot-andspirit thereof, and we do not, therefore, limit theinvention to the details as here shown,

except as We may be limited by the hereto appended claims forming a partthereof.

We claim:

1. In a hand tool,acombination hand grip and bearing sleeve adapted formanually supporting and operating said tool, a yoke mounted to beturned-to diiferent positions 'thereon,-a driving shaft mounted throughsaid handgrip and bearing sleeve, a tool shaft mounted cross wise insaid yoke at right angles to said driving shaft, driving connectionsfrom said driving shaft to said tool shaft, and spaced cutting toolsmounted on said tool shaft and driven thereby,

2. In, a hand tool, a combination-hand grip and bearing sleeveadaptedfor manually supporting and operating said tool; a yoke mountedto be turned to different positions thereon, a driving shaft mountedthrough said hand grip and bearing sleeve,

a tool shaft mounted cross-wise in said yoke at right angles to saiddriving shaft, drivin connections from said driving shaft to said toolshaft, spaced cutting tools mounted onsa'id tool shaft and driventhereby, a

guide member adjustably mounted adjacent said cutting tools .forregulating the cutting "depth thereof, and aguard over said outtingtools.

3IA hand tool of the character referred to comprising in combination a'bearing sleeve, a yoke mounted on' the end thereof and adapted to beturned to different positions thereon, a driving, shaft mounted throughsaid'bearing" sleeve and said yoke, a 'beveled' gear driven by-saidshaft, a saW shaft mounted crosswise in said yoke, a beveled gearsecured thereto and in mesh with ,the beveled gear driven by saiddriving shaft, circular saws secured to said saw shafts at aspace-apart, and guard members secured to said yoke over said saws,substantially as described. 1

l. A hand gain-cutting tool of they character shown and described,comprising a combination hand grip and bearing sleeve, ayoke adjustoblysecured to the'end thereof and adapted to be turned to differentpositions and provided with a bearing bracket therein, a driving shaftmounted throughsaid sleeve and said bearing bracket, a beveled gearmounted on the end thereof, a saw shaft mounted transversely throughsaid yoke, a beveled gear secured thereto and in mesh With the beveledgear driven by said drivlng shaft, circular saws secured to said sawshaft at opposite sides of, said beveled gears, saw guards secured tosaid yoke and overlying said saws, and a guide member adjustably securedto said yoke adj acent said saws for regulating the depth of the .cut ofsaid saws, substantially as described.

Signed at Portland, Multnomah county, Oregon, this 31st day of July,1917.

CHARLES F. 0, ROYAL.

, EDWIN E. THOMAS.

In presence of i I. M. GRIFFIN.

